/* Square & Level Web Co. — drafting sheet: blue grid paper, navy ink, blue line work, red-pencil notes, a drawing title block */
:root{
  --paper:#FBFCFD;
  --grid:#C9DCEE;
  --grid-fine:#E6EFF8;
  --ink:#14284B;
  --ink-soft:#2F3E5C;
  --muted:#4A5B78;
  --off:#5E6F8C;
  --line:#2E5AA8;
  --line-soft:#9DB8DA;
  --rule:#BCD2E8;
  --tint:#EAF2FA;
  --tint-strong:#D6E5F5;
  --tint-faint:#F3F8FD;
  --card:#FFFFFF;
  --on-ink:#FFFFFF;
  --red:#B83A2E;
  --red-tint:#FFF7F5;
  --font:"Chivo","Helvetica Neue",Arial,sans-serif;
  color-scheme:light;
}

*,*::before,*::after{box-sizing:border-box}
html{background:var(--paper);-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}
body{
  margin:0;padding:14px;
  background-color:var(--paper);
  background-image:
    linear-gradient(var(--grid) 1px,transparent 1px),
    linear-gradient(90deg,var(--grid) 1px,transparent 1px),
    linear-gradient(var(--grid-fine) 1px,transparent 1px),
    linear-gradient(90deg,var(--grid-fine) 1px,transparent 1px);
  background-size:120px 120px,120px 120px,24px 24px,24px 24px;
  color:var(--ink);font-family:var(--font);font-size:18px;line-height:1.55;
}
img,svg{max-width:100%}
a{color:var(--ink)}
a:hover{color:var(--line)}
:focus-visible{outline:3px solid var(--red);outline-offset:2px}
.skip{position:absolute;left:-9999px;top:0}
.skip:focus{left:24px;top:24px;background:var(--card);color:var(--ink);padding:10px 14px;z-index:10}

/* the sheet: a double-line drawing border around everything */
.sheet{
  border:2px solid var(--ink);
  box-shadow:inset 0 0 0 5px rgba(251,252,253,.6),inset 0 0 0 6px var(--ink);
  min-height:calc(100vh - 28px);
  display:flex;flex-direction:column;
}
main{flex:1}
.wrap{max-width:1240px;margin:0 auto;padding-inline:32px}

h1,h2,h3{margin:0;color:var(--ink);text-wrap:balance}
h1{font-size:clamp(40px,5.4vw,76px);line-height:1.02;font-weight:900;letter-spacing:-0.025em}
h2{font-size:clamp(32px,4vw,52px);line-height:1.05;font-weight:900;letter-spacing:-0.02em}
h3{font-size:21px;line-height:1.25;font-weight:700}
p{margin:0}
.lede{font-size:20px;color:var(--ink-soft);max-width:34em}
.soft{color:var(--ink-soft)}
.small{font-size:15px;color:var(--muted)}

/* header: brand on the left, manual-style tabs on the right */
.site-head{border-bottom:2px solid var(--ink)}
.site-head .wrap{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:12px 32px}
.brand{display:flex;align-items:center;gap:14px;padding:24px 0 14px;text-decoration:none;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand svg{flex:none}
.brand-name{display:block;font-weight:900;font-size:23px;letter-spacing:-0.01em;line-height:1.2}
.brand-tag{display:block;font-size:17px;font-weight:900;color:var(--line);letter-spacing:.01em;line-height:1.3}
.head-right{display:flex;flex-direction:column;align-items:flex-end;gap:10px;padding-top:16px}
.head-phone{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:17px;color:var(--ink);text-decoration:none;font-variant-numeric:tabular-nums}
.head-phone:hover{color:var(--line)}
.tabs{display:flex;flex-wrap:wrap;gap:4px;align-items:flex-end}
.tab{
  text-decoration:none;background:var(--card);color:var(--ink);
  font-weight:700;font-size:15px;line-height:1.3;
  padding:11px 16px 9px;border:1.5px solid var(--ink);border-bottom:0;border-radius:6px 6px 0 0;
}
.tab:hover{background:var(--tint)}
.tab[aria-current="page"]{background:var(--tint-strong);color:var(--ink)}
.tab-cta{background:var(--ink);color:var(--on-ink);padding-top:15px}
.tab-cta:hover,.tab-cta[aria-current="page"]{background:var(--line);color:var(--on-ink)}

/* buttons and links */
.actions{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.btn{
  display:inline-block;background:var(--ink);color:var(--on-ink);text-decoration:none;
  font-family:inherit;font-weight:700;font-size:18px;line-height:1.2;
  padding:17px 26px;border:0;border-radius:2px;cursor:pointer;
}
.btn:hover{background:var(--line);color:var(--on-ink)}
.btn-link{font-weight:700;font-size:18px;padding:17px 10px}

/* dimension line */
.dim{display:flex;align-items:center;color:var(--line);font-size:14px;font-weight:700;max-width:520px}
.dim .tick{width:1.5px;height:18px;background:var(--line);flex:none}
.dim .run{flex:1;height:1.5px;background:var(--line);min-width:16px}
.dim .label{padding:0 12px;white-space:nowrap}
.dim svg{flex:none}

/* red-pencil note */
.note{display:flex;gap:14px;align-items:flex-start;border:2px solid var(--red);background:var(--red-tint);padding:16px 18px;border-radius:3px;max-width:540px;font-size:16px;color:var(--ink)}
.note svg{flex:none;margin-top:1px}
.note strong{color:var(--red)}

/* hero */
.hero{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,460px),1fr));gap:56px;align-items:start;padding-block:64px 88px}
.hero-text{display:flex;flex-direction:column;gap:24px;max-width:600px;min-width:0}
.page-head{display:flex;flex-direction:column;gap:18px;padding-block:64px 56px}
.page-head > *{max-width:760px}
.fig{margin:0;display:flex;flex-direction:column;gap:18px;width:100%;max-width:600px;justify-self:center;min-width:0}
.fig-cap{font-weight:700;font-size:16px}
.parts{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr));gap:8px 24px;font-size:16px;color:var(--ink-soft)}
.parts li{display:flex;gap:10px;align-items:baseline}
.parts b{color:var(--ink)}

/* sections */
.section{border-top:2px solid var(--ink)}
.section > .wrap{padding-block:80px}
.stack{display:flex;flex-direction:column;gap:36px}
.section-head{display:flex;flex-direction:column;gap:12px;max-width:680px}
.split{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,380px),1fr));gap:48px;align-items:start}
.split > *{min-width:0}

/* tables: spec chart, troubleshooting chart, service intervals */
.table-box{overflow-x:auto;border:2px solid var(--ink);background:var(--card)}
.chart{width:100%;border-collapse:collapse;font-size:17px;font-variant-numeric:tabular-nums}
.chart th,.chart td{padding:14px 18px;text-align:left;vertical-align:top;border-bottom:1px solid var(--rule)}
.chart td + td,.chart th + td,.chart th + th{border-left:1px solid var(--rule)}
.chart thead th{background:var(--tint);border-bottom:2px solid var(--ink);padding:18px;font-weight:700}
.chart tbody th{font-weight:700}
.chart tbody tr:last-child > *{border-bottom:0}
.spec{min-width:740px}
.spec thead th:first-child{width:30%}
.spec thead th:nth-child(3){background:var(--tint-strong)}
.spec tbody td:nth-child(3){background:var(--tint-faint)}
.plan-name{display:block;font-size:22px;font-weight:900}
.plan-tag{display:block;font-weight:400;font-size:15px;color:var(--ink-soft)}
.price{font-weight:900;font-size:24px}
.no{color:var(--off)}
.trouble{min-width:760px}
.trouble td:last-child{font-weight:700;color:var(--ink)}
.trouble td{color:var(--ink-soft)}
.intervals{min-width:620px}
.intervals tbody th{white-space:nowrap}

/* plan cards: the spec chart's phone-sized stand-in */
.plan-cards{display:none}
.plan-card{background:var(--card);border:2px solid var(--ink);padding:22px;display:flex;flex-direction:column;gap:10px}
.plan-card.featured{border-color:var(--line);box-shadow:inset 0 0 0 2px var(--line)}
.plan-card .plan-name{font-size:24px}
.plan-price{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 8px}
.plan-price .price{font-size:34px}
.plan-card .checklist{margin-top:6px;font-size:16px;gap:8px}

/* checklists */
.checklist{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr));gap:12px 32px}
.checklist li{display:flex;gap:12px;align-items:baseline}
.checklist li::before{content:"\2713";flex:none;color:var(--line);font-weight:900}

/* numbered procedure (a real sequence) */
.steps{list-style:none;margin:0;padding:0;background:var(--card);border:1.5px solid var(--ink)}
.steps li{display:grid;grid-template-columns:56px minmax(0,1fr);gap:16px;padding:22px;border-bottom:1px solid var(--rule)}
.steps li:last-child{border-bottom:0}
.step-n{font-weight:900;font-size:30px;line-height:1;color:var(--line)}
.steps strong{display:block;font-size:20px;margin-bottom:4px}
.steps p{color:var(--ink-soft)}

/* FAQ */
.faq{border:1.5px solid var(--ink);background:var(--card)}
.faq details{border-bottom:1px solid var(--rule)}
.faq details:last-child{border-bottom:0}
.faq summary{cursor:pointer;padding:18px 22px;font-weight:700;font-size:19px;list-style:none;display:flex;justify-content:space-between;align-items:baseline;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--line);font-weight:900;font-size:24px;line-height:1;flex:none}
.faq details[open] summary::after{content:"\2212"}
.faq .answer{padding:0 22px 22px;color:var(--ink-soft);max-width:46em}

/* service record and values */
.record{margin:0;border:2px solid var(--ink);background:var(--card)}
.record div{display:grid;grid-template-columns:minmax(0,150px) minmax(0,1fr);gap:16px;padding:14px 20px;border-bottom:1px solid var(--rule)}
.record div:last-child{border-bottom:0}
.record dt{color:var(--muted);font-size:15px;font-weight:700}
.record dd{margin:0}
.values{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1.5px;background:var(--ink);border:1.5px solid var(--ink)}
.values li{background:var(--card);padding:22px;display:flex;flex-direction:column;gap:6px}
.values p{color:var(--ink-soft)}
.photo-fig{margin:0;display:flex;flex-direction:column;gap:10px;max-width:440px;width:100%}
.photo{display:block;width:100%;height:auto;aspect-ratio:4/5;object-fit:cover;border:2px solid var(--ink);box-shadow:8px 8px 0 var(--tint-strong)}
.prose{display:flex;flex-direction:column;gap:18px;max-width:38em}

/* forms */
.form{display:flex;flex-direction:column;gap:16px;background:var(--card);padding:28px;border:2px solid var(--ink);border-radius:2px;min-width:0}
.form-title{display:flex;justify-content:space-between;align-items:baseline;gap:12px;flex-wrap:wrap;padding-bottom:14px;border-bottom:2px solid var(--ink)}
.form-title strong{font-size:19px}
.form-title span{font-size:14px;color:var(--muted)}
.field{display:flex;flex-direction:column;gap:6px;font-size:15px;font-weight:700}
.field .hint{font-weight:400;color:var(--muted)}
.field input,.field select,.field textarea{
  font:inherit;font-weight:400;font-size:17px;padding:13px 14px;width:100%;
  border:1.5px solid var(--off);border-radius:2px;background:var(--card);color:var(--ink);
}
.field textarea{resize:vertical;min-height:110px}
.form-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr));gap:16px}
.fine{font-size:14px;color:var(--muted)}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.form-sent{border:2px solid var(--line);background:var(--tint);padding:14px 16px;font-size:16px}

/* footer with drawing title block */
.site-foot{border-top:2px solid var(--ink)}
.site-foot .wrap{padding-block:28px 32px;display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:24px}
.foot-left{display:flex;flex-direction:column;gap:14px;flex:0 1 20em}
.foot-nav{display:flex;flex-wrap:wrap;gap:6px 20px;font-size:15px;font-weight:700}
.titleblock{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;flex:1 1 560px;max-width:760px;background:var(--ink);border:2px solid var(--ink)}
.titleblock .tb-wide{grid-column:span 2}
.titleblock div{background:var(--card);padding:8px 12px;display:flex;flex-direction:column;min-width:0}
.tb-label{font-size:12px;color:var(--muted)}
.tb-value{font-size:15px;font-weight:700;overflow-wrap:anywhere}

@media (max-width:900px){
  .values{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:640px){
  body{padding:8px;font-size:17px}
  .sheet{min-height:calc(100vh - 16px)}
  .wrap{padding-inline:18px}
  .section > .wrap{padding-block:56px}
  .hero{padding-block:36px 56px;gap:40px}
  .page-head{padding-block:40px 36px}
  .brand{padding-top:18px}
  .brand-name{font-size:20px}
  .tab{padding:10px 12px 8px;font-size:14px}
  .tab-cta{padding-top:12px}
  .head-right{align-items:flex-start;padding-top:0}
  .lede{font-size:18px}
  .values{grid-template-columns:minmax(0,1fr)}
  .titleblock{grid-template-columns:repeat(2,minmax(0,1fr))}
  .form{padding:20px}
  .record div{grid-template-columns:minmax(0,1fr);gap:2px}
  .steps li{grid-template-columns:40px minmax(0,1fr);padding:18px}
  .spec-wrap .table-box{display:none}
  .plan-cards{display:grid;gap:16px}
  .chart.stackable{min-width:0}
  .chart.stackable thead{position:absolute;left:-9999px}
  .chart.stackable tr{display:block;padding:16px 18px;border-bottom:1px solid var(--rule)}
  .chart.stackable tbody tr:last-child{border-bottom:0}
  .chart.stackable td,.chart.stackable tbody th{display:block;padding:3px 0;border:0}
  .chart.stackable td::before{content:attr(data-label);display:block;font-size:13px;font-weight:700;color:var(--muted)}
  .chart.trouble td:first-child{font-weight:700;color:var(--ink);font-size:18px;padding-bottom:8px}
  .chart.trouble td:first-child::before{display:none}
  .chart.intervals tbody th{font-size:18px;padding-bottom:8px}
}